If you are using Windows 10 or a lower version then carry out the following steps to repair the USB Flash Drive: Insert the USB drive into the USB port of your system. Go to My Computer>Removable Disk Icon. Right click the Removable Disk Icon and open its Properties. Click on the Tools tab. Click “Rebuild” button.
Use “Undelete” to recover deleted files from USB Drive Corrupt or Unresponsive.

Use “Unformat” to recover data from formatted USB Drive Corrupt or Unresponsive.

Use “Full Scan” to recover lost files USB Drive Corrupt or Unresponsive partitions show as “raw” or recover files which can not be found with “undelete”and “unformat” and “recover partition” ,recover files from raw partition,recover files of partitons which are not NTFS,nor exfat,nor fat32.
When you encountered one of such situations, how can you recover files from the flash drive when it is damaged or unresponsive?